Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZjlDdqA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-67141154-9a49-455a-ad35-c1e641c20b72",
      "cw-38319789-247c-45dc-85e7-f12c901e54ff"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0ebdd8b1-7b07-43e8-ae68-1e7f7776f59e",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZjlDdqA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-38319789-247c-45dc-85e7-f12c901e54ff"
  }
}